Display foreign key columns as link to detail object in Django admin

Question

As explained in link-in-django-admin-to-foreign-key-object, one can display a ForeignKey field as a link to the admin detail page.

To summarize,

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Answer 1

A slight respin on the accepted answer. It is not necessarily better, but implements some of the advice in the comments:

from django.contrib.contenttypes.models import ContentType
from django.urls import reverse
from django.utils.html import format_html


def linkify(field_name):
    def _linkify(obj):
        content_type = ContentType.objects.get_for_model(obj)
        app_label = content_type.app_label
        linked_obj = getattr(obj, field_name)
        linked_content_type = ContentType.objects.get_for_model(linked_obj)
        model_name = linked_content_type.model
        view_name = f"admin:{app_label}_{model_name}_change"
        link_url = reverse(view_name, args=[linked_obj.pk])
        return format_html('{}', link_url, linked_obj)

    _linkify.short_description = field_name.replace("_", " ").capitalize()
    return _linkify